From sona pona

    o is a particle in toki pona used to form optative, vocative, and imperative phrases and sentences.

    Uses of o[edit | edit source]

    Imperative[edit | edit source]

    o can be followed by a verb, in which case the sentence is interpreted as a command. The subject of the sentence is ommited.

    o musi e ilo kalama!
    Play the instruments!

    Vocative[edit | edit source]

    o can follow a noun to show that the speaker is addressing that person, place, or thing.

    toki, jan ale o!
    Hi, everybody!
    soweli mi o, sina moku e lipu mi tan seme?
    Doggo, why did you eat my homework?

    Optative[edit | edit source]

    o can be used instead of li to indicate the speaker's wish or desire. o can be used with mi and sina, in which case it comes immediately after the pronoun and before the predicate.

    mi o lape.
    I should sleep.
    pona o tawa sijelo sina.
    May health be in your body.
    I hope you get better!

    External resources[edit | edit source]